133333253 has 2 divisors, whose sum is σ = 133333254. Its totient is φ = 133333252.

The previous prime is 133333229. The next prime is 133333289. The reversal of 133333253 is 352333331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91833889 + 41499364 = 9583^2 + 6442^2 .

It is a cyclic number.

It is not a de Polignac number, because 133333253 - 2¹⁰ = 133332229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133333223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66666626 + 66666627.

It is an arithmetic number, because the mean of its divisors is an integer number (66666627).

Almost surely, 2^133333253 is an apocalyptic number.

It is an amenable number.

133333253 is a deficient number, since it is larger than the sum of its proper divisors (1).

133333253 is an equidigital number, since it uses as much as digits as its factorization.

133333253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7290, while the sum is 26.

The square root of 133333253 is about 11547.0019052566. The cubic root of 133333253 is about 510.8728523287.

Adding to 133333253 its reverse (352333331), we get a palindrome (485666584).

The spelling of 133333253 in words is "one hundred thirty-three million, three hundred thirty-three thousand, two hundred fifty-three".